Transmission shifting mechanism



P. L. TENNx-:Y 1,826,407

TRANSMISS ION SHIFT ING MECHANISM Filed Dec. l5, 1926 2 Sheets-Sheet l Il l (o '""II HW" O lili: O "Humm"V PTU/f atlomgj Oct. 6, 1931. P.- L.TENNEY TRANSMISSION SHIFTING MECHANISM Filed Dec. 13, 1926 2Sheets-Sheet 2 sure at allv timesandistherefore i Figure 2 isl 415i'housing el frenar n, rnnnnorfmnnorn, lIrmIAfNA;Assrerno'rt rro .GENERALmorons conform-l rrongor nn'ruorr, MIGHIKGAN, A conroRA'rIoN orlDELAWARE i @ThisVinve'ntion relates to transiniissionsas applied tomotor vehicles andYpart-icularly'tov the gear'shlfting mechanismthereof. e 'i In gear-shifting V'inechanisrnsluse: has f been v madekpfasmooth ymachined iundersurface'r on the transmissioneover over which thein;` terl'ock plate could slide, but thisstructure vnecessitated someexpense in the way of manu! l'facturing costs andA it is thefobj'ectof'my inl'fjfivention .toproduce va"f"trans `missi `)n' shiftingmechanism in `which themachining ofthe i coverplate isjclirninated andcost'fof pro-'f duction decreased. I accomplish this object i byproyiding a separate metal stanipingvbe- 1553 tween the transmissioncover and the support ing-'plate'andloolt this stamping to bothcover andsupporting plate; Between Vthe plate f andtheistamping are to'be foundthe shiftery tableandthe shifting forks for operatingt-he gears ofthetransmission. By the use 'of my the transmission cover casing;

"new structureV .1s simplified.

" Thege'arfshiftingglever of my invention has f afball vshapedendf'and'is underv spring pres" prevented a 'front rattling whichvhasgbeen an 'objection on prior constructions. Y, "i 1.17 Theinventiondisclosed in the accompanying drawings in which,A i i Figure 41 yis asect'onalview of theztra'ns--I Y inissi'on showng my invention appliedthere-l t- ;k i

Yviewfof?the-'parts of my shift-u: 'er mechanism`lookingffrom thefbottom.

FigureVVV 3 -is 1a detailed sectionall vview.

tlnfoughV a shifting mechanismen theline v.Figurer /l is ap-er'speeiveview of various parts of my inventionjlfshowlngrin separatedy i i` thehousingfilj; The@ shiftingleer 'has-aI 'of thefhousing andwhich rIeAlvsMrssIoiSjsiiIFTmG MEGHANISM hollow'end'port'ion in which isseated a sprlng'l() which actson a plunger 11 itted within the hollowend portion. The lower end of the plunger is ball shaped as yshown at12`Iandrests in a. .trough 13 on the supporting plate 14.- 7

' The plate 14: has upturned flanges 15 at its sides and downturnedflanges 16 at its ends and theflanges 15 are in turn bent at `rightangles as shown at and provided with openings 17 for the reception ofbolts or riv ets 1S by means of which it is secured to the cover? 3.Adjacent each flange 15 the supporting plate is provided with a channel20 and 'on opposite sides of its longitudinal centre llnewith oppositelydirected slots or openA ings 21 and 22 for the reception of the shiftertongues 23'and 24 of the shifter forks 25 and 26 respectively; Theseshifter forks have arcuate portions 27 at their lower ends for receptionwithin collars 27 and 28 on the low i,

. 'The forks 2K5-:and 2G have their shifter :tongues integral'therewithand formed by" Y downwardly bending as atf33, a `cut-'out portion of thebody of a fork, leavingy a recess* 32,* extending 'inwardly from theopposite edges to approximately the centre of each fork. Theinnerabuttingv edges of the body portions of the forks are provided witlilslots or recesses, numeral 34 indicating the recesses of fork 25 andnumeral 35 the recess ofy fork 26,' andprojecting upwardly from the bodyof the 'fork 25 is a stud 36. while a stud 37 similarly projects fromthe body, of fork 26.

When' the shifter forks are placed in their proper abutting position onthe supporting *plated the" shifter tongues Jwll project through theopenings 21 and 22 andl their outer edges 38 will be tween the flanges15 of the supporting plate ,which construction will permit of ashifting. of the forks in a longitudinal ydirec'-` tionbut nottransversely.v After the inser;` tion of thetongues through openingsy 21and they will mesh withr the correspending ion ' collar onf the lovv`and high Ytransmission I gears. Y

'Mounted they forks 25and 26 is aV sliiftei y f ftable-39 'of generalrectangularcontounhut havingtheupvvardlyhent tongues j projectingcentrally outvvardlv 'fronieitherside. Y The longitudinalY centreof'ithe shifter plate;

l'has a comparatively vnarrow'elongated' slot 41 -1 avingopenmgtllerelntofrom opposite sides [the shifting' forks.

Similarf longitudinally Vspaced y*lateral slots or recesses42fand'43"forv the reception fof studs'orpin's 36 and respectively, of When'the "frlsf'ae 'ini i 1 their neutral position the slots 42and-43, are

. wMounted overv the shifter vtable N39 is a f ldngit'udinal slot`49atits dentre].A rllhe sta-mp-A 'f secured `to "the transmission 5 cover 1-l fandth'esupporting-platehy means of holts fr.

47k f, and 48 ce'ntrallv'of Vits: sides, and a broad f 1 18 andform's' aspacer member betvve'eu the pressure exerted thereon by assembledrelation, the plungertvill-1project Y throughslotsf49 and 41-and'iitceitherofthe 'v .-'recesses`f34-for- 3 5.' VIf* thcv shiftertablen. iis-in flits' -central position--Y loot-h` of Vth e' studs 36%37fvvllhe engagedfin the slots 42 oif43 39' cannot be moved longitu-y l slotconnection Will prevent-anvshifting ofjthe forks. f Now if i' andlas thetable right* giving the l'positionv of? the i i'sup'portijng'platelt-,andthe cover 355 The" islots,y 47j andl 48?are/forthe reception' Vofthe vtongues '40gficfjthe shiftertable '39 andlih'ejv uds 3 13 of. the@ plunger' :11i f Tins the spring-10,:Theoperation of the device i Assuming theparts"-of ;Fig1ire 414505. bindinally, the i'stud and the'lovveniend of thelle'vei' y5 is shiftedtothe side overjthe i moving'saiddevicesfr Y Y Y 'f 254k TnalgearSshiftine'fmechanism incoinhi- "lheaslots-341-;55,'411andv 9coincide, 'vvithY `v if slot 49'. suhstantiallyftvvice theW-idthiofeither slot? 41 Y or 'the combined slot 344535, and the? Y latter isf'atleast tvvice'thef-vvidthjof theball v` y and'has the hall iportion:'thereoffseated viii the vcombined slot @S4-'35 andrest'sinfthetrough lof'the supj P Ortingplate14and a' continuous',downward? parte as;

shownl in Figure the table39 vvilll also he shifted and cause the stud.36 of the fork 25 to leave-.theslot 42, andy theslot 43 to fur' therysurround thefstudV 37: of theV fork'26.

VTheslot 4l is now coincident with the right Side of the slot49,'.hall-12 of theplunger l1 is seated* in theV slotv 34,' and theIstud 36j is f inthe path ofthefslot 41. The lever''isnow freefromobstruction and shifting' it at richt angles toits originalfmovement itWill canrvalong'Wi-th itr the fork/25" by mea-ns of thehall andslot,connection 13,134, and by meansfof-'thel shifter tonguef123, Willshift? the :igea-1129 longitudinally ofthe shaft 50.

- After the"` alcove: operation i any -further shifting of .the leverymusthe in the reverse directionwhich will. throw out the gear 29.

and lov thenthrov/inp;V the lever ito the `left the vfork-25. Will :hedisengaged vand thefo'rk 26 engaged. iThe fork 26 may now he moved ltobring its gear 30into engagement by shiftingthe-ilever 5V inl the',direction of the slots- 4lifandl149.

Itvvill oficoursepbe understoodthat the yforks 25 :or 261vvill bevpreventedV from kheinz,

shifted inone longitudinal 'directionh'v the tongues Y23 .or 24coming1in:contactwith the #stamping 4 5 ofgeneral-rectangular contour.;` Thisstamping .isy provided .with `loolt open- V ings 46l vCorrespondingftothe 'opening Von f the;supporting,plateY v1 4fand'. With recesses' 95mechanism in jcomloi` asup porting member kfor' Vthe.mechanism,shifterle devices t supported .bv said member.; shift-l ahle table overlyingsaid "shifterdevices.said

said devices for engagement, in said recesses to perinit the imovement'of onl'yi' one, of Ysaid devices at'l a time, 'means-.for fsecuring said`- member( to thetransmission'f housing', andl means formovingsald table andselectively nation transmission hou'sine',-a :supporting; member for the mechanism, shifterv devices supportedh'y saidmember, a shiftyable tableoverlvine' said shifter devices, s meansforcontrollinir the'shiftingmovement of said'ztablegsaidtable havingy a'longitudi-v nal-slot with lateral slots opening thereinto,

los l meansfon said shifter devicesfadapted! to enL gage in said lateralslots ,to nermitjthe Inove-YA ment of onl'v'ione of ksaiddevices at" atime,

meansflfor securing saidi'nennbery to thejti'aris` mission housingfandmeans-,pa'ssinge-throu said longitudinal.slottoimove'seidtalole and Yselectivelymove'fsaid devices? l 3L'. In'a'g'ear shifting' mechanism incombi'- na'tionwith a transmissionghousing, a'sup` porting' member forthe mech anisin, shifter .devlces-jsupported hvsaid memhenaV shift` able'p table toverlying- `said .shifterv devices,

means yOniisaid" devices engaging said table,

said means and table .locking all lor allfhut y Vzgnation with a.transmission housing, a snp )gg for securing Ysaid"rrieclmnisnr tothetransn` gg-porting vmember 'forthemechanism, shifter 'mamma '8. gearshifting mechanismv in combination with atransmission housing, asuphavin-gy part. vgnidin'gfsaid table, 'sa-id, VVpart"havin-g'slots,said table: having p-roje f 'ing ton-gassin, enga,f fementn`I ith slotsin saiflvl l party tofgu-ide said table ini its-shifting move- 4ggment,means for securing said. member to the"y transmission ,lrousing,.'andy-means for mov-1 c rfing said tableand selectively operating saidgdevcesiV -c L 4f a vgear shiftinginechanism in combi with a transmissionhousing,-v asuppor member ,for the mechanism, shiifdceri devicessupportedfgby saidqm'ember, aV shiftf able. table overlyingsai-d.shifter fdevices," me-ansjon: said. devices engaging saidiltable,.,iggsaid means andtable'locking ira-lll' or all but; one-.ofi said;devices at one time, saidf mechay nism@ having a part Aguiding saidtable, said y A tableV having' projecting tongues rv1in' engage'-mentivith. slots in: said ipart to perm-it move- "zggmen-t-of saidtableiin-but one directiommeans for securing said member to.- t-hetransmission housing, and vmeans for shifting said table'and-,selectively mofving'sai'd devices. cln a: gea-r shifting mechanismin combi'- devices supported by said member, a table having recesses,means on said shifter devices, receivable inisaid recesses .and adaptedto permit the movementfof but one ot said de; vices at a time, means forsecuring said member tothe transmission housing, meansy forv moving saidtable and said devices, and a'ball shaped spring pressed end on saidvmoving means seated on saidsupporting member and `engaging said tableand devices to move the' same. 1 f

'nation with a transmission housing, a. sup portingmember for themechanism, shifter devices supported by said-member, a movable devicesreceivable in said recesses and ad anted to permit the movement of butone of said de'- vices at a time, said table and devices being partguiding said table, meansl'or securing f said member in the transmissionhousing, an d porting mem-loerY for the mec-han ism, shifterdevicessapported bv saidmernber, a movable table overlying VsV shterdevices, projecting studs on said devices, said table havimgv agg;alongitudinal Yslot with late-ral slots opening thereinto, said studsadapted tof-be received' v in said lateral slots tepel-mitl movement oirv butone ofisaiddevi'ces-a't atime, said mechay nism-,lravinga partguidingsaficl` table,` means .ing said devices. f

10. In a gear shifting mechanism in combinationwith a transmissionhousing, a supporting'memberfor the mechanism, shifter devices supportedby' said member, a table havin-fg recesses, means on said shifterdevices receivable in saidrecesses and adapted to permit themovement ofbut one of said dov'ces at time, saidmechanism having a Vpart guide ing'said 'i'abl'ensaid` 'table'l'and devicesbeing movable-,relative to saidvsupporti ng member and said' part, 'meansior securing said member tothe:transmission,housing` and a mannally operable member --eXtendinginto the v sion: housing`Y an'olmeanshfor moving sa d'taloleamilsaiddevices, I 6. In a gear shifting mechanism in comb y,"nationf with ay transmission honsimg, asuredevicesfsupported.bysidmember,amovable' tah-le overlying;saidfshifter devices, mean f Said hable anddevices t? Shift thetable'imd inter glvgiflfSaiditableaiiddevices ,oper r '"SeLCtlVelymovelhe deVlCeS- mitmovem'ent of'but one of said devices' at"Zamine-said mechanism having a part'gudf--- natlQnWlth 2L @ausm-15510humg'a @SPP- porting member ior the mechanism, shitter .mgLsai-dtable,"said part/having a4 centrali. c v slot, means forrsecuring said member'intli'e` devfes Supported by Sad' membe f-L tabl@ portin-gi member forthe mechanism, shifter f., 9. In a gear shifting mechanism in combi-fltable having recesses, means on said shifter relatively movable, saidmechanism having ameansassociated With` said housing` for mov'ntransmission'housing and directly engaging 11. In'a'gear shiftingmechanism in combi-i moving saidtable 'and selecti transmissionhousnrgiyand means'nassing'v 'Y throughVY said slotV and intoz saidhousing j n ely c opera-ting saidv devices.

3 Ina' gear shitting meehanismin combi? VAnation vvith atransnr'nssiorrffhonsing, afsnp- 't porting memberi'or mechanism,shii'ter g Ib; devices sanported-bysard'member amo'vable l tablfehavmg'recesses,meanson.sa1d 's lrriitery devi-ces frecei'vablein said recessesand. adaptedito. permit the movement of but" one of devices'at, time',saidk mechanism having a? 'parti said tab-le, means for securing saidvmember to? thetransmissionhousing, and means: ormoving said table sardidevices,

' saidfparnftable, and devices'lraving super# i Viii-1posed slots;forthe reception attire movin `having recesses, meanson said shiftervices .receivable in said recesses and adapted' to permit themovementoibut one of said devices yat a time, saidrmechanism *having* apartiguiding said table, means for securing saidf'member 4to the.transmission housing, meansfor' moving said table and said devices,andflanges onsaid supporting membcrto prevent movement of said'devicesvin one direcv ableirrfsaid recesses and 'adapted to permit the movementof butV one of said devices at 1 aV tiin'ie'-,` sai-df mechanism havinga stamping rob guiding said table,` meansffor"securingjsaid plate tothe-transrnission housing,= and" means-` for 'selectively moving saidtablev and devices.`

13.' In rcombination y With a .transmiseion;V a.. gear shiftingmechanism compris-lrv y ing a supporting member for saidmechani'sm, ojshifterdevlces supportedby 'said member,` a .l movable tableoverlyingsaidf shifter 'devices',1

f means nterengaging `said table and 4devices 10i' and adapted tofholdone of tlieldevicesi from movement' While vthe Otherone yis fmoved,fan'element Yoverlying' said table v,and controllingv vits' movement, means--passingl vthrough said i" bination with a transmission housing;porting-plate having lateral'lilanges 2o:

Vmember and element for securing said mem,-

said table anddevices.`

ber'in' said .,housing,y andi means-1 for vshifting lllfIn' avgearshit/ting mechanism;v in com-j asu'jofy d'einingf channela aplurality of shifter devi ces sup-` portedinsaid channel, ashiftableftable .sup- Y ported overv said shifter devicesmeans inter-r fengaging said table WithA saidTshifter/devices to vcontrol vsaid devicesin saidjchannel, meins-. ber overlyin'gsaid table and flanges and conf.trolling the. movement of i said tab-le', Y means for securing said.anges,"mem`ber and housv table anddevices."

ing together, L and means :`y for shifting y said v l .15.* In'a gearshifting mechanisingin com-V f-binationwith a ltransmission housing,Vasu-p4 1 f' porting elementhaving openingsyjapluralityI Voi shifterdevices resting'onsaidelement an'df Vhaving portions projecting Ythrough' saidf. openings' a shifterjtableov rlying saidfde vices, means`interenga'glng "saijd ftable ,Withf v said devices i to controltheimovementthere# nel and 'having portions 'extending sion, ashiftabletablexoverlying said of, means interposedjbetvveen" themechanism f and ,housing forf-contiollinglthe' movement fl 4Q. y Y

of'said table, means forisecuringfsaid' elementjlin f they housing, .andniean's yforfsh'iftirig said'- tablejand'devices."" v f" 161 In a ygear`shifting-ni'ne'chani sm .Yin-'com-'f bina'tiony With a transmissionhousing; a` supporting platehavingr flanges definingafchan-` f neL'saidchannel having vopeningsf,a plurality oi'shifter devicespositionedgivithin'said ch an- Y I through `1 saidopenings Vtoengage-With the transmis! devices,

. meansv interengaging :said table Withjsaid-fde A plate` 'and' table tofor" securing; said plate zin ff the vices to control themovement-the'1"eo'i1`,n a plate.,

controlling'them'ovement of saidtable; means Y "heusing, and

means extendingA through openings 1in said l engage lsaid shifterdevices to move the same.:y 'I ih f i 717". In agear'yshifting mechanismin .com7

` bination Witha-transmissionhousing, a sup-p 'o so porting .member for'the fmechanisni, shifter' devices supportedby said 1nembzr5 la'movable,.`

l table overlying said f shifter devices', .means on 'said vfdevices"engaging said table7 Tsaid'; means and table lockingall or allbut oneof l -saidjdevices atl Qneftimez said Inecllfall.S111V .hav-f; 'y

. devices supported b.-

ing

Vcuring saidlmen'ijber to' the transmission l`0usl ing. inside thefsame, anda manually Yoper'arblemem'ber extending into thetransmissioniihousing'land directly VV'engaging sald table and a partiguidingsaidtable, Vmeans vif'orgfse devices toshifttlietable andselectivelymove*j l the devicesi having apluralityof one ing-the`mechan1sm5 shifts' sesshift ythe tabl'ef and selectively; 'move said devices.

19. In ajgear shiftingmechanisminconi binationfwifth la transmissionhousing', alsup-y porting member for the mechanism, shifter devicessupported :by said inembergsaid V,de- .Y vices '-'havingshiftertmgues@projecting through Openings infsaidjmemberga movable V`Jtableoverlyingsaid shifter devi''i'es, means onY said devices engaging fsaidtable'.- said means` and table locking all. l'or Yall. kbut fone nflsaid f devicesat one time,' meansg'for securing saidmember to'the"transmissionl housing inside thelsamefand a V.mannallyfopei'ablefnemberj Vextendingl into the transmission hou-sing vanddirectly` engaging" said'- table devices )to shift the Vices@v` 1;

bination Witha'transmissi'on housing, a sup-1 portingl member for]` thevmechamsm; shifter Y iable'.'table/overlying l y means .on said devicesengagingffs'aid ,table`r said :means land table locking falloy all; but

one .of-said devices K- at oneftime, said Vmecha` nismhaving apartguidingfsaidftableimeans for rvsecuringlsaid member .tothe transmission'housing' insidethe V.same7V and manually'` operable -memberlextendingfinto 'ftheztranslg missionfhous'ing. and directly.engagingg-saide.

tively move. said .device .fz

f 21.A Inag'earls'hiftingmechanism nzfcom-A bination with.;atransmission housing, a supi f c mechanism; "shifter: devicessupportedbysaidlmemberea movable'f porting' member fforiftlie? table'andzselectivelymove said-de#v i' i table: and `devices to .shiftthetableland selec# l S. "'"v Effi" Ltable overlying said 'shifter'kdevices,f.fmeans in vsaidmechanism.permitting lateral,bu'tnotVVlongitudinal movement' of ysaid t able` meanstable; said lon said vdevicesengaging said meansand tablelocking all'jor lalllbut one of? isaid devices at one time, said mchanism-hvf Y meansfor se cur 111g Sadmember t0 the transmissionhous-y l ing apart guidingqsaid' table,

ing inside the same, and a manually operable member extending intoy thetransmission housing and directly engaging said table and devcesto shiftthe table and selectively move y 5 Y said devices.

22. Ina gear shifting mechanism in combination With a transmissionhousing, a supporting member for the mechanism, shifter devices`supported by said member, shifter m tongues on said devices comprisingportions pressed from the body yof the devices, said tongue-sl passingthrough openings in said jmember, aV movable table overlying saidshifter devices, means onvsaid devices engagl5 ing said table, saidmeans and table locking all or all but oneof said devices at one time,

means for securing said member to the trans- Vl =mission housing insidethe same, and a manually operable member extending into the mv.transmission housing and directly engaging said table and devices 'toshift the ,table and selectively move said devices.

In testimonywlie'reof I'aiiix my signature.

PERRYVL TENNEY.

" vso

